Level.



No. 864,744. y PATENTED AUG'. 27, 1907,. J. W. POWELL.

LEVEL.

APPLICATION FILED MAY 29, 1906. BENBWBD JULY 3,1907.

l n van l'o'a Witnesses I Mfg y i nu: Nolmls Pnnns co., v/Asumomu, x:A c,

NITED STATES PATENT OFFICE.

JAMES W. POWELL, OF OLEONE, OREGON.

LEVEL.

To all whom t may concern:

Be it known that I, JAMES W. POWELL, a citizen of the United States, residing at Oleone, in the County of Multnomah and State of Oregon, have invented certain new and useful Improvements in Leveling Instruments; and I do hereby declare lthe following to be a full, clear, and exact description ot the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to new and useful improvements in leveling instruments and more particularly to that class known as spirit levels and my object is to provide an instrument oi this class whereby any angle can be ascertained up to ninety degrees.

A further object is to provide means vfor holding the parts of my improved device after they have been adjusted.

A further object is to so construct the parts of my device that one portion thereof will told over the tube containing the leveling fluid which will be protected when the instrument is thus olded together.

Other objects and advantages will be hereinafter made clearly apparent in the specification and pointed out in the claims.

In the accompanying drawings, which are made a part of this application, I have shown the preferred iorm ot my invention.

In said drawings-Figure l is a perspective view of my improved leveling instrument showing the same secured to a straight edge; Fig. 2 is an elevation of the same, the instrument being set to ascertain the angle ot forty five degrees; Fig. 3 is an elevation showing the instrument folded together and ready for transportation, and Fig. 4 is a sectional view through one oi the standards.

Referring to the figures by numerals of reference, l indicates the base of my improved instrument to the upper surface of which are secured standards 2 and 3, the standard 2 being provided with ears 4 between which is pivotally secured a leveling bulb 5 and the standard 3 is provided with similar ears 6 between which is pivotally mounted a graduated arm 7. The leveling bulb 5 and the arm 7 are held in place between the ears 4 and 6 respectively by means of adjusting bolts 8, said bolts being so arranged thatla'fter the parts have been properly adjusted, they may be held in their adjusted position by directing the points of the bolts 8 tightly against the ends of the bulb 5 and arm 7, the inner ends of the bolts 8 serving as pivots ior the bulb and arm. The upper end 9 of the leveling bulb 5 is disposed at an angle so that when said end is brought into engagement with the arm 7, the notches l0 in the arm will be engaged by the extreme upper edge loi the leveling bulb, thereby enabling me to make Specification of Letters Patent.

Patented Aug. 27, 1907.

Application filed May 29, 1906, Serial N0. 319,366. Renewed July 3, 1907. Serial N O. 382,077.

As shown in Fig. l ot the drawings7 my improved instrument may be secured to a straight edge or the like ll when being used on large work. When the instrument is not secured to a straight edge it is in- To ascertain the pitch ot' any angle between zero and ninety degrees or to get the surace at a predetermined angle, the instrument is employed as in Fig. 2 of the drawings, the base l being disposed on the sur face and the leveling bulb elevated along the arm 7 until the bead in said leveling bulb has reached a point showing that the bulb is horizontal and by bringing the arm 7 into Contact with the end 9, it will indicate thel degree oi pitch of the surface upon which the instrument is resting.

The standard 3 is preferably made longer than the standard 2 so that when the leveling bulb is disposed in a horizontal position or resting upon the base l, the arm 7 will descend directly over the leveling bulb and rest upon the post 2, thereby forming a shield tor the leveling bulb and protect the same against breakage as well as disposing the parts ot' the instrument into a compact term and admitting of its ready insertion into the users pocket. i

What I claim as new is 1) An instrument of the class described comprising a hase, a standard secured to said base and near one end thereof, ears on said standard, a graduated arm pivotalljv mounted between said ears, :in adjusting bolt through said ears, a standard at the opposite end of said base ot less length than the first mentioned standard, ears en said standard, a leveling device pivotally secured between said ears, and an adjusting bolt through said ears and leveling devicc, the upper end ol' said levelingl device beingl tapered, the extreme end thereof being,v adapted to engage graduations on the arm to determine the pitch oi a surface.

2. A11 instrument of the class described comprising a base, standards on said base, one of said standards being ot' greater length than the other, a leveling device secured to oneot said standards, means to hold said leveling device in its adjusted position, an arm having graduations thereon pivoted to the opposite standard, and means to hold said arm in its adjusted position.

3. An instrument of the class described coml'u'ising the combination with a hase, standards on' said base and a levcling instrument pvotally secured to one of said standards and having its tree end tapered to iorln a sharp edge; ot a graduated arm pivot-ally secured to the opposite standard and having notches to engage the sharpened edge et said leveling instrument.

In testimony whereof I have signed my name to this speciiication in the presence of two subscribing witnesses.

.T AMES W. POWELL.

Witnesses BAZIJL BLUM,

' T. E. PETERSON. 

